Detailed text transcripts for TV channel - DW - 20180410:12:38:00
Works when an exoplanet passes in front of its star it blocks a small part of the starlight during its transit. this tiny dip in the light level can be detected and given the regularity and the extent of the darkening astrophysicists calculate the duration of the planet's orbit its mass and science. telescopes at the european southern observatory in chile and nasa space telescopes use this method to discover an entire planetary system depth trappist one. this is what it may look like seven planets roughly the size of the earth and three or four of them could potentially. life. has been going a...